Rensselaer Semi-Weekly Republican, Volume 39, Number 28, Rensselaer, Jasper County, 7 December 1906 — X-Rays for Pearl Fishers. [ARTICLE]

X-Rays for Pearl Fishers.

Pharr fishers on the coast of Ceylon find X-rays of great service. By their application It is possible to distinguish without opening the shells the valuable oysters from those containing no pearls. The latter are- thrown back Into the sea.—Straits Budget.